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TitleTill composition across the Rae craton south of Wager Bay, Nunavut: results from the Geo-Mapping Frontiers' Tehery-Cape Dobbs project
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorMcMartin, IORCID logo; Wodicka, NORCID logo; Bazor, D; Boyd, B
SourceGeological Survey of Canada, Open File 7417, 2013, 31 pages, Open Access logo Open Access
LinksCanadian Database of Geochemical Surveys, downloadable files
LinksBanque de données de levés géochimiques du Canada, fichiers téléchargeables
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
File formatrtf; pdf; xls; jpg
NTS46D/05; 46D/12; 46D/13; 46D/14; 56A; 56B; 56C/01; 56C/02; 56C/07; 56C/08; 56C/09; 56C/10; 56C/15; 56C/16; 56F/01; 56F/02; 56F/07; 56F/08; 56F/09; 56F/10; 56F/15; 56F/16; 56G/01; 56G/02; 56G/03; 56G/04; 56G/05; 56G/06; 56G/07; 56G/08; 56G/09; 56G/10; 56G/11; 56G/12; 56H/01; 56H/02; 56H/03; 56H/04; 56H/05; 56H/06; 56H/07; 56H/08; 46E/03; 46E/04
AreaKazan Shield; Wager Bay
Lat/Long WENS-93.0000 -87.0000 65.8333 64.0000
Subjectssurficial geology/geomorphology; economic geology; geochemistry; tills; till analyses; till samples; glacial deposits; dispersal patterns; ice transport directions; sediment transport; indicator elements; olivine; chromite; diopside; pyrope; till geochemistry; Cenozoic; Quaternary
Illustrationslocation maps; plots
ProgramGEM: Geo-mapping for Energy and Minerals Geomapping for Energy & Minerals (GEM) - Geo-mapping Frontiers
Released2013 12 16
AbstractThis report presents the field database and analytical results from the 2012 till sampling campaign of the GEM Geo-mapping Frontiers' Tehery-Cape Dobbs project. Pebble lithologies, dominated by felsic to intermediate intrusive rocks with minor metavolcanic and metasedimentary rocks, indicate short glacial transport distances and local provenance, likely linked to proximity to the Keewatin Ice Divide during the last glaciation. Forsteritic olivine grains, locally coincident with mantle-derived indicator minerals (chromite, Cr-diospide, Cr-pyrope), are most abundant south of the kimberlite field discovered by Peregrine Diamonds Ltd. and form a possible fan-shaped dispersal pattern that extends 80 km, parallel to a strong southeast ice-flow recorded south of the Keewatin Ice Divide. Potential sources for the olivine grains include olivine-rich crustal rocks or multiple kimberlite bodies. A supracrustal belt in the central portion of the map area shows the greatest potential for base and precious metal mineralization as highlighted by anomalous values in Ag, Cu, Bi, Au, and other metals in till samples collected near a sulphide gossan within the belt.
Summary(Plain Language Summary, not published)
This publications reports the results of surficial geology field observations and composition of glacial sediment samples collected in 2012 across the Rae craton south of Wager Bay in mainland Nunavut. The work was undertaken to provide new geological knowledge of the composition of surficial materials left by the retreat of the last glaciers. It will help evaluate resource potential of some of the most remote and poorly understood regions of Canada¿s north. This work was conducted under the Geo-Mapping Frontiers¿ Tehery project at the Geological Survey of Canada, as part of Natural Resources Canada¿s Geo-mapping for Energy and Minerals (GEM) Program.

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